Engines included:
- 1.6 8V Petrol (ALZ)
- 1.8 20V Turbo Petrol (AMB)
- 1.8 20V Turbo Petrol (AVJ)
- 1.8 20V Turbo Petrol (BEX)
- 1.8 20V Turbo, -Cabriolet Petrol (BFB)
- 1.9 TDI Diesel (AVB)
- 1.9 TDI Diesel (AVF)
- 1.9 TDI Diesel (AWX)
- 1.9 TDI Diesel (BKE)
- 2.0 20V, -Cabriolet Petrol (ALT)
- 2.0 FSi Petrol (AWA)
- 2.4 V6 30V, -Cabriolet Petrol (AMM)
- 2.4 V6 30V, -Cabriolet Petrol (BDV)
- 2.5 TDI V6 Diesel (AKE)
- 2.5 TDI V6 Diesel (AYM)
- 2.5 TDI V6 Diesel (BAU)
- 2.5 TDI V6 Diesel (BDH)
- 2.5 TDI V6, -Cabriolet Diesel (BCZ)
- 2.5 TDI V6, -Cabriolet Diesel (BDG)
- 2.5 TDI V6, -Cabriolet Diesel (BFC)
- 3.0 V6 30V Petrol (AVK)
- 3.0 V6 30V Petrol (BGN)
- 3.0 V6 30V, -Cabriolet Petrol (ASN)
- 3.0 V6 30V, -Cabriolet Petrol (BBJ)
- S4 (4.2 V8), -Cabriolet Petrol (BBK)
Diagnostic Instructions
Connect an OBD scanner to your Audi A4 2001-2005 to retrieve diagnostic fault codes.
Applies to: 1.6 8V Petrol (ALZ), 1.8 20V Turbo Petrol (AMB), 1.8 20V Turbo Petrol (AVJ), 1.8 20V Turbo Petrol (BEX), 1.8 20V Turbo, -Cabriolet Petrol (BFB), 1.9 TDI Diesel (AVB), 1.9 TDI Diesel (AVF), 1.9 TDI Diesel (AWX), 1.9 TDI Diesel (BKE), 2.0 20V, -Cabriolet Petrol (ALT), 2.0 FSi Petrol (AWA), 2.4 V6 30V, -Cabriolet Petrol (AMM), 2.4 V6 30V, -Cabriolet Petrol (BDV), 2.5 TDI V6 Diesel (AKE), 2.5 TDI V6 Diesel (AYM), 2.5 TDI V6 Diesel (BAU), 2.5 TDI V6 Diesel (BDH), 2.5 TDI V6, -Cabriolet Diesel (BCZ), 2.5 TDI V6, -Cabriolet Diesel (BDG), 2.5 TDI V6, -Cabriolet Diesel (BFC), 3.0 V6 30V Petrol (AVK), 3.0 V6 30V, -Cabriolet Petrol (ASN), 3.0 V6 30V, -Cabriolet Petrol (BBJ), S4 (4.2 V8), -Cabriolet Petrol (BBK)
Steps:
- Connect OBD scanner to diagnostic port
- Turn ignition to ON position (engine off)
- Follow scanner instructions to read codes
- Record any codes displayed
- Consult service manual for code meanings
Fault Codes including 945 manufacturer-specific
Powertrain
Body
| Code | Description |
|---|---|
| B100B | Available in product |
| B100C | Available in product |
Network
| Code | Description |
|---|---|
| U016A | Available in product |
| U016B | Available in product |
| U016C | Available in product |
| U016D | Available in product |
| U016E | Available in product |
| U016F | Available in product |
| U017A | Available in product |
| U017B | Available in product |
| U017C | Available in product |
| U017D | Available in product |
| U017E | Available in product |
| U017F | Available in product |
| U018A | Available in product |
| U018B | Available in product |
| U018C | Available in product |
| U018D | Available in product |
| U018E | Available in product |
| U018F | Available in product |
| U019A | Available in product |
| U019B | Available in product |
| U019C | Available in product |
| U019D | Available in product |
| U019E | Available in product |
| U019F | Available in product |
| U020A | Available in product |
| U020B | Available in product |
| U020C | Available in product |
| U020D | Available in product |
| U022E | Available in product |
| U022F | Available in product |
| U023A | Available in product |
| U023B | Available in product |
| U023C | Available in product |
| U023D | Available in product |
| U023E | Available in product |
| U024A | Available in product |
| U024B | Available in product |
| U024C | Available in product |
| U024D | Available in product |
| U024E | Available in product |
| U024F | Available in product |
| U0252 | Lost communication with rear lighting control unit B |
| U0253 | Lost communication with the accessory protocol interface module |
| U0254 | Lost communication with the remote start module |
| U0255 | Lost communication with the front display information module |
| U0256 | Lost communication with front controls/display interface control unit A |
| U0257 | Lost communication with the front controls/display interface control unit |
| U0258 | Lost communication with the radio transceiver |
| U0259 | Lost communication with special purpose vehicle control unit A |
| U025A | Available in product |
| U025B | Available in product |
| U025C | Available in product |
| U025D | Available in product |
| U025E | Available in product |
| U025F | Available in product |
| U0260 | Lost communication with seat control switch module A |
| U0261 | Lost communication with seat control switch module B |
| U0262 | Lost communication with audio amplifier B |
| U0263 | Lost communication with the speech recognition module |
| U0264 | Lost communication with the rear-view camera |
| U0265 | Lost communication with image processing sensor A |
| U0266 | Lost communication with image processing sensor B |
| U0267 | Lost communication with image processing sensor C |
| U0268 | Lost communication with image processing sensor D |
| U0269 | Lost communication with image processing sensor E |
| U026A | Available in product |
| U026B | Available in product |
| U026C | Available in product |
| U026D | Available in product |
| U026E | Available in product |
| U026F | Available in product |
| U0270 | Lost communication with image processing sensor L |
| U0271 | Lost communication with seat control switch module 3 |
| U0272 | Lost communication with seat control switch module 4 |
| U0273 | Lost communication with lighting driver control unit 1 |
| U0274 | Lost communication with lighting driver control unit 2 |
| U0275 | Lost communication with lighting driver control unit 3 |
| U0276 | Lost communication with lighting driver control unit 4 |
| U0277 | Lost communication with seat control unit 11 |
| U0278 | Lost communication with seat control unit 12 |
| U0279 | Lost communication with haptic control unit |
| U027A | Available in product |
| U027B | Available in product |
| U027C | Available in product |
| U027D | Available in product |
| U027E | Available in product |
| U027F | Available in product |
| U0280 | Lost communication with camera 4 |
| U0281 | Lost communication with camera 5 |
| U0282 | Lost communication with camera 6 |
| U0283 | Lost communication with camera 7 |
| U0284 | Lost communication with active grille shutter module A |
| U0285 | Lost communication with active grille shutter module B |
| U0286 | Lost communication with the radiator sensor |
| U0287 | Lost communication with transmission fluid pump module |
| U0288 | Lost communication with DC-AC converter control unit A |
| U0289 | Lost communication with DC-AC converter control unit B |
| U028A | Available in product |
| U028B | Available in product |
| U028C | Available in product |
| U0461 | Invalid data received from the audible warning control unit |
| U0462 | Invalid data received from the compass module |
| U0463 | Invalid data received from the navigation display module |
| U0464 | Invalid data received from the navigation control unit |
| U0465 | Invalid data received from the PTO control unit |
| U0466 | Invalid data received from the rear heating, ventilation and air conditioning (HVAC) control unit |
| U0467 | Invalid data received from the fuel additive control unit |
| U0468 | Invalid data received from the fuel cell control unit |
| U0469 | Invalid data received from the starter/generator control unit |
| U046A | Available in product |
| U046B | Available in product |
| U049B | Available in product |
| U049C | Available in product |
| U049D | Available in product |
| U049E | Available in product |
| U049F | Available in product |
| U0566 | Invalid data received from image processing sensor A |
| U0567 | Invalid data received from image processing sensor B |
| U0568 | Invalid data received from image processing sensor C |
| U0569 | Invalid data received from image processing sensor D |
| U056A | Available in product |
| U056B | Available in product |
| U056C | Available in product |
| U056D | Available in product |
| U056E | Available in product |
| U056F | Available in product |
| U0570 | Invalid data received from image processing sensor K |
| U0571 | Invalid data received from image processing sensor L |
| U0585 | Invalid data received from active grille shutter module A |
| U0586 | Invalid data received from active grille shutter module B |
| U05A0 | Available in product |
| U05A1 | Available in product |
| U05A2 | Available in product |
| U3012 | Available in product |
Other
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